For the record

In referring to Rushanara Ali as one of Britain's first two female Muslim MPs, the other being Shabana Mahmood, we inadvertently omitted the third: Yasmin Qureshi, newly elected MP for Bolton South East ("Can these new faces at Westminster break the mould of old politics?").

"So which voting system is best for Britain?", a clarification: strictly speaking, Mary McAleese, president of Ireland, was elected by PR-STV (proportional representation by single transferable vote), which is the system used for elections in Ireland. However, when used to return a single candidate (Ireland is a single constituency at a presidential election) it amounts to the same as AV (alternative vote). In addition, Boris Johnson was not elected mayor of London by AV but by SV (supplementary vote). It is structured so as to prevent third-placed candidates coming through, which can be the case with AV. AV+ has never been used anywhere, but it should be noted that it is a version of a system (known as MMP/AMP), which has been used in Germany since 1949, New Zealand since 1996, Scotland and Wales since 1999 and a number of other countries.